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Discovery launched at the cusp of dawn, at 6:21 a.m. EDT, on April 5, 2010. Here's the view from Cocoa, Florida.	Discovery's contrail is touched by the light of dawn, as the shuttle heads toward orbit.	An interesting atmospheric effect begins to be visible as the shuttle continues its journey.
Note the contrail, and then the "winged" clouds created by the shuttle. I've never seen the shuttle leave that sort of trail before; I'm told it was nacreous clouds. If I had to make up a term, I'd call it the falling angel effect for its beautiful wispy wings.	Here's another shot of Discovery's "falling angel effect" (nacreous clouds) as it heads over the horizon and toward orbit.	Sunlight begins to catch the dissipating contrail.

2010 reports and photos